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// Copyright 2017 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"os"
"testing"
"github.com/ethereum/go-ethereum/swarm/api"
"github.com/ethereum/go-ethereum/swarm/storage/feeds/lookup"
"github.com/ethereum/go-ethereum/swarm/testutil"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/swarm/storage/feeds"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/log"
swarm "github.com/ethereum/go-ethereum/swarm/api/client"
swarmhttp "github.com/ethereum/go-ethereum/swarm/api/http"
)
func TestCLIFeedUpdate(t *testing.T) {
srv := testutil.NewTestSwarmServer(t, func(api *api.API) testutil.TestServer {
return swarmhttp.NewServer(api, "")
}, nil)
log.Info("starting a test swarm server")
defer srv.Close()
// create a private key file for signing
pkfile, err := ioutil.TempFile("", "swarm-test")
if err != nil {
t.Fatal(err)
}
defer pkfile.Close()
defer os.Remove(pkfile.Name())
privkeyHex := "0000000000000000000000000000000000000000000000000000000000001979"
privKey, _ := crypto.HexToECDSA(privkeyHex)
address := crypto.PubkeyToAddress(privKey.PublicKey)
// save the private key to a file
_, err = io.WriteString(pkfile, privkeyHex)
if err != nil {
t.Fatal(err)
}
// compose a topic. We'll be doing quotes about Miguel de Cervantes
var topic feeds.Topic
subject := []byte("Miguel de Cervantes")
copy(topic[:], subject[:])
name := "quotes"
// prepare some data for the update
data := []byte("En boca cerrada no entran moscas")
hexData := hexutil.Encode(data)
flags := []string{
"--bzzapi", srv.URL,
"--bzzaccount", pkfile.Name(),
"feed", "update",
"--topic", topic.Hex(),
"--name", name,
hexData}
// create an update and expect an exit without errors
log.Info(fmt.Sprintf("updating a feed with 'swarm feed update'"))
cmd := runSwarm(t, flags...)
cmd.ExpectExit()
// now try to get the update using the client
client := swarm.NewClient(srv.URL)
if err != nil {
t.Fatal(err)
}
// build the same topic as before, this time
// we use NewTopic to create a topic automatically.
topic, err = feeds.NewTopic(name, subject)
if err != nil {
t.Fatal(err)
}
// Feed configures whose updates we will be looking up.
fd := feeds.Feed{
Topic: topic,
User: address,
}
// Build a query to get the latest update
query := feeds.NewQueryLatest(&fd, lookup.NoClue)
// retrieve content!
reader, err := client.QueryFeed(query, "")
if err != nil {
t.Fatal(err)
}
retrieved, err := ioutil.ReadAll(reader)
if err != nil {
t.Fatal(err)
}
// check we retrieved the sent information
if !bytes.Equal(data, retrieved) {
t.Fatalf("Received %s, expected %s", retrieved, data)
}
// Now retrieve info for the next update
flags = []string{
"--bzzapi", srv.URL,
"feed", "info",
"--topic", topic.Hex(),
"--user", address.Hex(),
}
log.Info(fmt.Sprintf("getting feed info with 'swarm feed info'"))
cmd = runSwarm(t, flags...)
_, matches := cmd.ExpectRegexp(`.*`) // regex hack to extract stdout
cmd.ExpectExit()
// verify we can deserialize the result as a valid JSON
var request feeds.Request
err = json.Unmarshal([]byte(matches[0]), &request)
if err != nil {
t.Fatal(err)
}
// make sure the retrieved feed is the same
if request.Feed != fd {
t.Fatalf("Expected feed to be: %s, got %s", fd, request.Feed)
}
// test publishing a manifest
flags = []string{
"--bzzapi", srv.URL,
"--bzzaccount", pkfile.Name(),
"feed", "create",
"--topic", topic.Hex(),
}
log.Info(fmt.Sprintf("Publishing manifest with 'swarm feed create'"))
cmd = runSwarm(t, flags...)
_, matches = cmd.ExpectRegexp(`[a-f\d]{64}`) // regex hack to extract stdout
cmd.ExpectExit()
manifestAddress := matches[0] // read the received feed manifest
// now attempt to lookup the latest update using a manifest instead
reader, err = client.QueryFeed(nil, manifestAddress)
if err != nil {
t.Fatal(err)
}
retrieved, err = ioutil.ReadAll(reader)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(data, retrieved) {
t.Fatalf("Received %s, expected %s", retrieved, data)
}
}
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